S6100 Design Notes

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The S-6100 is an S-100 card using the IM6100 PDP-8 CPU. The S-6100 includes special hardware that traps unimplemented PDP-8 IOT instructions to control panel memory and, with sutitable firmware, allows S-100 I/O cards to emulate standard PDP-8 peripherals. The major subsystems included on the CPU card are -

  • CPU (IM6100) - twelve bit, PDP-8/E compatible instruction set
  • MEDIC (IM6102) - memory extension, real time clock and DMA controller
  • RAM - 64K x 12 bits static RAM (32K main memory and 32K panel memory)
  • EPROM - 32K x 12 bits EPROM for bootstrap and panel firmware
  • UART (HD6402) - console serial port with KL8-E compatible interface
  • Front Panel - interface connector for a lights and switches front panel
  • S-100 - bus interface for 8 bit peripherals (I/O only)
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